package cn.cocho.dborm.schema;public abstract class SchemaConstants {    public static final String TABLES = "tables";    public static final String TABLE = "table";    public static final String TABLE_CLASS_PATH = "class_path";    public static final String TABLE_NAME = "tableName";    public static final String COLUMN = "column";    public static final String COLUMN_FIELD_NAME = "field_name";    public static final String COLUMN_IS_PRIMARY_KEY = "is_primary_key";    public static final String COLUMN_DEFAULT_VALUE = "default_value";    public static final String RELATION = "relation";    public static final String RELATION_FIELD_NAME = "field_name";    public static final String DEFAULT_VALUE_NULL = "null";}